Comparative study of beam losses and heat loads reduction methods in MITICA beam source

E. Sartori, P. Agostinetti, S. Dal Bello, D. Marcuzzi, G. Serianni, P. Sonato, P. Veltri

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Abstract

In negative ion electrostatic accelerators a considerable fraction of extracted ions is lost by collision processes causing efficiency loss and heat deposition over the components. Stripping is proportional to the local density of gas, which is steadily injected in the plasma source; its pumping from the extraction and acceleration stages is a key functionality for the prototype of the ITER Neutral Beam Injector, and it can be simulated with the 3D code AVOCADO. Different geometric solutions were tested aiming at the reduction of the gas density. The parameter space considered is limited by constraints given by optics, aiming, voltage holding, beam uniformity, and mechanical feasibility. The guidelines of the optimization process are presented together with the proposed solutions and the results of numerical simulations.
Original languageEnglish
Article number02B308
Pages (from-to)-
JournalReview of Scientific Instruments
Volume85
Issue number2
DOIs
Publication statusPublished - 1 Feb 2014
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Instrumentation

Cite this

Sartori, E., Agostinetti, P., Dal Bello, S., Marcuzzi, D., Serianni, G., Sonato, P., & Veltri, P. (2014). Comparative study of beam losses and heat loads reduction methods in MITICA beam source. Review of Scientific Instruments, 85(2), -. [02B308]. https://doi.org/10.1063/1.4827677